Each electron winds up with kinetic energy of
(270 keV)
plus
(whatever KE it had when it started accelerating).
Answer:
The wavelength of the light is 555 nm.
Explanation:
according to Bragg's law..
n×λ = d×sin(θ)
n is the fringe number
λ is the wavelength of the light
d is the slit separation
θ is the angle the light makes with the normal at the fringe.
Answer : The value of
is -166156 J and equilibrium composition should favor products at standard conditions.
Explanation :
Now we have to calculate the Gibbs free energy.
As we know that,
![\Delta G^o=\Delta H^o-T\Delta S^o](https://tex.z-dn.net/?f=%5CDelta%20G%5Eo%3D%5CDelta%20H%5Eo-T%5CDelta%20S%5Eo)
where,
= standard Gibbs free energy = ?
= standard enthalpy = -249 kJ = -249000 J
= standard entropy = -278 J/K
T = temperature of reaction = ![25^oC=273+25=298K](https://tex.z-dn.net/?f=25%5EoC%3D273%2B25%3D298K)
Now put all the given values in the above formula, we get:
![\Delta G^o=(-249000J)-(298K\times -278J/K)](https://tex.z-dn.net/?f=%5CDelta%20G%5Eo%3D%28-249000J%29-%28298K%5Ctimes%20-278J%2FK%29)
![\Delta G^o=-166156J](https://tex.z-dn.net/?f=%5CDelta%20G%5Eo%3D-166156J)
- A reaction to be spontaneous when
and reaction will be favored in the forward direction that means favored in products.
- A reaction to be non-spontaneous when
and reaction will be favored in the backward direction that means favored in reactants.
As the value of
is less than zero that means the reaction is spontaneous and reaction will be favored in the forward direction that means favored in products.
Hence, the value of
is -166156 J and equilibrium composition should favor products at standard conditions.